Twisting and winding apparatus for transfer tail



Dec. 16, 1947. w, J v N r I 2,432,564

TWISTING AND WINDING APPARATUS FOR TRANSFER TAIL Filed June 1, 1946INVENTORS. WILLIAM J.EL.VIN. ELMER R. STAHL.

BY %lz o mzvs. L

Patented Dec. 16,1947 2,432,55 UNITED STATES PATENT OFFICE 'rwIs'rmG ANDWINDING Arman-rue FOR TRANSFER ran.- 1

William J. Elvin, Frostburg, Md., and Elmer a. Stahl, Mpyersdale, Pa.,asslgnors' to Cclanese Corporation of America, a corporation of DelawareAppllcatlonJune 1, 19.46, Serial No. 679,794

9 Claims. (CI. 57-45) 2 This invention relates to an improvedmechpigtail yarn guide 4 set in a bar 5 and coming anism adapted to beemployed in connection with from any suitable source of supply, such asa yarn twisting and winding apparatus whereby a metier or spinningcabinet (not shown), passes magazine wrap or transfer tail may beapplied to downward and is threaded through a traveler 9 yarn packages,such as bobbins and the like. dur- 5 mounted on a spinning ring 'I setin a ring holding yarn twisting and winding operations. er 8, the latterbeing mounted on a vertically re- As commonly understood in the textileart, a ciprocable ring rail 9. Ring rail 9 carries a plumagazine wrap ortransfer tail is a portion of rality of said spinning rings suitablyspaced the inner end of the first yarn wound on the thereon so thatmultiple winding operations may yarn support, which is so disposed as tobe posi- 10 be carried on. Beneath ring rail 9 is a stationary tivelysecured during the winding of the remainchannel Ill on which is mounteda series of spinder of the yarn package, yet freely available for dlesII, each of which supports a bobbin (only tying directly to the outerend of the yarn on an one being shown for the sake of clarity) set otheryam package. The purpose of providing thereon and in frictionalengagement therewith. a magazine wrap or transfer tail is to enable anBobbin I2 comprises abarrel l3 and a base flange uninterrupted flow ofyarn to be maintained I4, the upper plane surface'of the latter beingfrom a depleted yarn package to a full package provided with tangentialslots I 5 and I9 which adjacent thereto, as in a creel or other yarncommunicate with a peripheral groove I! cut in package holder on whichboth yarn packages are said base flange I4, which peripheral groove issupported. adapted to receive and retain the desired maga- An object ofthis invention is the provision of zine wrap or transfer tail. Thebobbin I2 may be means, cooperating with ring twisting and windof thetype shown in Patent No. 2,298,357 to Elvin ing devices whereby yarnsare wound on to yarn et al. Spindles II are rotated at high speed bypackage supports, for varying the traverse stroke suitable driving means(not shown) which enof said twisting and winding devices so that a gagethe whorl I8 of said spindles in the normal magazine wrap or transfertail may be applied manner well understood in theart. on said yarnpackage supports. The rotation of spindle II and yarn package Anotherobject of this invention is to provide support I2 causes yarn 3 to bewound thereon. means for automatically applying a magazine The yarnwindings are suitably distributed along wrap or transfer tailsimultaneously to each of the barrel I4 of yarn package support I! toform a series or bank of yarn package supports, while a yarn package ofthe desired shape by a vertical said yarn package support are revolvingat high reciprocating traverse and builder motion which speed. isimparted to ring rail 9. The traverse motion A further object of thisinvention is the proviof said ring rail 9 is produced through therecipsion of means forming an integral part of the rocating angularrotation of a shaft I9 which ac-' traverse mechanism of a twisting andwinding tuates a lifter arm 20 integral with a collar 2| device, whichmeans is adapted to vary the travsuitably fixed to shaft I9 for angularmovement erse stroke of said device without interfering therewith. Theangular rotational reciprocation with the normal operation thereof sothat a magof shaft I9 is produced by suitable means, hereazine wrap ortransfer tail will be applied to yarn 4o inafter described and thisreciprocation causes packages being wound thereon. lifter arm 20 to beraised and lowered. The ris- Other objects of this invention will appearing and falling action of lifter arm 20 thus profrom the followingdetailed description and the duced causes ring rail 9 to be raised andlowered accompanying drawing. through rod 22 having mounted thereon afoot In the accompanying drawing, wherein the 23 which rests on a rollerM i m On a P preferred embodiments of our inv ntion r 25 fitted into aslot 26 at the end of arm 20. The shown, bar 5 carrying yarn guides 4 isalso raised and Fig. 1 is a perspective view of a portion of a. loweredthrough the action of rod 21 having foot yarn winding device showing apair of spindl 28 which rests on a roller 29 carried by arm 20, units, ayarn support or bobbin on one of them, thu maintaining constant thedegree of balthe traversing ring rail and the traverse adjustlooning ofthe y ning mechanism of our invention cooperating 4 '\,A l is also fixedt0 Said Shaft the therewith, and free end of which lever is pivotallyattached to Fig. 2 is a side-elevational view of an enthe mainhorizontal traverse bar by means of larged detail of a portion of saidtraverse adjust-1 a D n 80 that the re ipr cation of l ver 29' ingmechanism. caused by the angular movement of shaft I9 Like referencenumerals indicate like parts effects the horizontal reciprocation ortraverse throughout both view of th dr wi of said traverse bar. A lever32, also fixed to shaft Referring now to the drawing and more par- I9,has a bifurcated free end forming fingers 39. tlcularly to Fig. 1, ayarn I passing through a -A pin 94 is carried between said fingers andhas journaled thereon a connector bar 35 the use of which willhereinafter be set forth. To make the vertical traverse of bar and ringrail 9 smooth and even, the traverse bar 39 extends along substantiallythe entire length of the winding machine and actuates one or moreadditional ring rail traversing or lifter units (not shown) of aconstruction similar to that shown suitably disposed along the length ofthe winding machine and cooperating with said ring rail 9 through aplurality of levers 29' and lifter arms 20 acting on a plurality oflifting rods such as 22 and 21.

The connector bar 35 is connected to a pneumatic mechanism, generallyindicated by reference numeral 38, which is, in part, keyed to the maintraverse shaft 31, and, in part, freely rotatable thereon, as will bemore fully described hereinafter. The pneumatic mechanism 36 controlsthe extent of the vertical traverse of ring rail 9 and guide bar 5 byenabling the relative angular position of reciprocating shaft l9 and themain traverse shaft 31 to be changed. Thus, the pneumatic controlmechanism, at the start of the winding of the yarn 3 on the yarn packagesupport l2, has no air supplied thereto thus permitting the lowering ofthe ring rail to a position where the yarn will wind in-the peripheralgroove ll of the base flange l4 of the yarn support to provide atransfer tall or magazine wrap. The pneumatic control mechanism, afterair is supplied thereto, permits a so-called normal reciprocation of thering rail 9 and causes the yarn 3 to be wound on and satisfactorilydisposed along barrel l3 of th yarn package support.

The control mechanism 36 is mounted on main traverse shaft 31 and isadapted, in part, to be rocked with said shaft and thus to reciprocateconnector bar 35. The horizontal reciprocating motion of connector bar35 is efiected by the action of a bell crank lever arm 38, which ispivotally mounted on shaft 31 and connected to said bar 35 by a pin 39.The other end of said bell crank lever arm is attached to a link 40 bymeans of a pin 4!. The upper or bifurcated end of link 40 is connectedto one end of a rocker arm 42 by means of a pin 43, said rocker arm 42pivoting on a pin 44 set in a bracket 45. The opposite end of saidrocker arm 42 is pivotally mounted in the upper end of a pistonconnecting rod 48 by means of a pin 41, the lower end of said piston rod46 being attached to a piston 48, contained in an air cylinder 49, ,by awrist pin 58. Movement of the piston 48 in cylinder 49 is effected byintroducing air under pressure from a suitable source of supply intocylinder 49 through a tube 5|. The distance through which the bell cranklever arm 38 may be moved by the action of the compressed air enteringcylinder 49 and acting on piston 48, rocker arm 42 and link 49 may becontrolled by means of adjustable set screws 52 and 53 which arethreaded into a U-shaped bracket 54. Bracket 54 is integral with bracket45 and with air cylinder 49, the whole being keyed to main traverseshaft 31 so as to rock therewith as a single unit.

During the regular running of the winding device, the entire weight orload of the ring rail 9 and the traverse assembly is supported by theair under pressure acting on piston 48 in cylinder 49, said load beingtransmitted to the piston, as indicated above, through the combinedaction of connector bar 35, bell crank lever arm 38, link 49, rocker arm42 and piston connecting rod 48.

When air pressure of a degree suflicient to counteract fully this loadis'rnaintained in cylinder 49. rocker arm 42 will act to force the upperfork of bell crank lever arm 38 down as far as it will go thus causingit to be maintained in contact with the surface of set screw 52, asshown in dot-dash line in Fig. 2. In this position the maximum downwardtraverse stroke of ring rail 9 is limited by the horizontal distancethat bell crank lever arm 38 permits connector bar 35 to be moved due tothe restraining force of the air under pressure in cylinder 49. Thus,when air under Pressure is in cylinder 49, the yarn 8 will wind only onto the barrel l3 of yarn package support i2.

When itis desired to place a magazine wrap or transfer tail in theperipheral groove H of flange l4, the air pressure in cylinder 49 isreleased on the downward traverse stroke of ring rail 9, suitable valverelease means (not shown) being provided. Since the pneumatic force bal=ancing the weight of ring rail 9 and limiting the maximum length of thedownward traverse stroke is no 'iongeroperative, bell crank lever arm 88rotates on main traverse shaft 31 in a counter clockwise direction untilthe upper fork is in contact with set screw 53, as shown in the drawing.With bell crank lever arm 38 in this position, the downward traversestroke is increased a short distance. At the lowermost position of ringrail 9 during the resulting increased traverse stroke, the traveler 6and ring I are brought into the same plane as flange l4. This actioncauses yarn 3, winding on to yarn package support l2, to entertangential'slot l5 and to be guided into the peripheral groove l1, wherethe desired magazine wrap or transfer tail is applied. The stroke ofring rail 9 is then reversed by main traverse shaft 31 and, when ringrail 9 is on the upward stroke following application of the magazinewrap, yarn 3 leaves peripheral groove l1, enters tangential slot 18 andis then taken up on the barrel 13 of yarn package support 12.Simultaneously, air under pressure is again caused to enter cylinder 49.The air pressure forces the piston 48 up and rocker arm 42 acting onbell crank lever arm 38 again presses it down against set screw 52 toshorten the traverse stroke. The entire traverse mechanism thus assumesits normal running position which is maintained until the package isfilled.

Inthe event of air leakage or failure at cylinder 49, there is provideda lock nut 55 threaded on to a rod 58 set in bracket 54. Lock nut 55 maybe moved by rotating hand crank 51 in the proper direction thus rotatingshaft 58 carrying a helical gear 59 mounted on one end thereof. Helicalgear 59 meshes with a helical gear 59 keyed to rod 55 causing the latterto rotate in bearing 81 and to move lock nut 55 up or down, as the casemay be. Lock nut 55 limits the freedom of hell crank lever arm 38 topivot and, depending upon the position which it is caused to assume bythe rotation of crank handle 51, may be effectively employed to limit orcontrol the traverse stroke of ring rail 9 without the use of compressedair acting on piston 48 in cylinder 49.

It i to be understood that the foregoing detailed description is givenmerely by way of illusleast one spinning ring and traveler mountedthereon for winding yarn on a rotating yarn support,,of means includinga shaft for traversing the ring rail and means operatively connected tosaid shaft for increasing the length of the downward traverse stroke ofsaid ring rail beyond the normal traverse stroke thereof, so as to causethe winding of a relatively small amount of yarn on the yarn support ata point spaced from the main body of yarn, said small amount of yarnbeing available for use as a transfer tail. 7

2. In a spinning device for producing yarn packages having a transfertail, the combination with means including a ring rail having at leastone spinning ring and traveller mounted thereon for winding yarn on a,rotating yarn support, of an angularly reciprocating traverse shaft,means including a rotatably mounted shaft reciprocating with saidtraverse shaft, a lever arm operatively connected to said rotatablymounted shaft for traversing the ring rail, and means, cooperating withsaid rotatably mounted shaft and said lever arm for increasing thelength of the downward traverse stroke of said ring rail beyond thenormal traverse thereof, so as to cause the winding of a relativelysmall amount of yarn on the yarn support at a point spaced from the mainbody of yarn, said small amount of yarn being packages having a transfertall, the combination packages having a transfer tall, the combinationwith means including a ring rail having *at least one spinning ring andtraveller mounted thereon for winding yarn on a rotating yarmsupport, ofan angularly reciprocating traverse shaft operatively connected to arotatable shaft so as to reciprocate said shaft uniformly therewith, alever arm keyed to said rotatable shaft and reciprocatingtherewith, avertical rod depending from said ring rail and resting on saidreciprocating lever arm for traversing the ring rail, and pneumaticallyoperated traverse control release means, including a bell crank leverpivotally mounted on the angularly reciprocating traverse shaft andcooperating with the lever arm and the rotatable shaft, for varying theangular rotation of said rotatable shaftrelative to the angularlyreciprocating traverse shaft and increasing the length of the downwardtraverse stroke of the reciprocating lever arm and the ring rail beyondthe normal traverse stroke thereof, so as to cause the winding of arelatively small amount of yarn on the yarn support at a point spacedfrom the main body of yarn, said small amount of yarn being availablefor use as a transfer tail.

6. In a spinning device for producing yarn packages having a transfertail, the combination with means including a ring rail having at leastone spinning ring and traveller mounted thereon for winding yarn on arotating yarn support, of an angularly reciprocating traverse shaftoperatively connected to a, rotatable shaft so as to reciprocate saidshaft uniformly therewith, a lever arm keyed to said rotatable shaft andreciprocating therewith, a vertical rod depending from said ring railand resting on said reciprocating lever arm for traversing the ringrail, and

\ traverse control release means including a bell means, cooperatingwith the angularly reciprocating traverse shaft and the rotatable shaft,for increasing-the length of the downward traverse stroke of said leverarm, so as to cause the winding of a relatively small amount of yarn onthe yarn support at a point spaced from the main body of yarn, saidsmall amount of yarn being available for use as a transfer tail.

4. In a spinning device for producing yarn packages having a transfertail, the combination with means including a ring rail having at leastone spinning ring and traveller mounted thereon for winding yarn on arotating yarn support, of an angularly reciprocating traverse shaftoperatively connected to a rotatable shaft so as to reciprocate saidshaft uniformly therewith, a lever arm keyed to said rotatable shaft andreciprocating therewith, a vertical rod depending from said ring railand resting on said reciprocating lever arm for traversing the ringrail, and means, including a bell crank lever mounted on the angularlyreciprocating traverse shaft and cooperating with the lever arm and therotatable shaft, for varying the angular rotation of said rotatableshaft relative to the angularly reciprocating traverse shaft andincreasing the length of the downward traverse stroke of thereciprocating lever arm and the ring rail beyond the normal traversestroke, so as to cause the winding of a relcrank lever pivotally mountedon the angularly reciprocating traverse shaft, a rod connected at oneend to said reciprocating lever and and at the other end to one fork ofsaid pivotally .mounted bell crank lever, a rocker arm attached to theother fork of said bell crank lever, and control means for allowing saidrocker arm, bell crank-lever, rod and reciprocating lever arm to movethrough a predetermined angle and increase the angular rotation of therotatable shaft relative to the angularly reciprocating traverse shaft,whereby the length of the downward traverse stroke of the reciprocatinglever arm and the ring rail is increased beyond the normal traversestroke thereof, so as to cause the winding of a relatively small amountof yarn on the yarn support at a point spaced from the main body ofyarn, said small amount of yarn being available for use as a transfertail.

'7. In spinning device for producing yarn packages having a transfertail, the combination with means including a ring rail having at leastone spinning ring and traveller mounted thereon for winding yarn on arotating yarn support, of an angularly reciprocating traverse shaftoperas tively connected to a rotatable shaft so as to reciprocate saidshaft uniformly therewith, a lever arm keyed to said rotatable shaft andreciprocating therewith, a vertical rod depending from said ring railand restingon said reciprocating lever arm for traversing the ring rail,and pneumatically operated traverse control release means including abell crank lever pivotally mounted on the angularly reciprocatingtraverse shaft, a rod connected atone end to said reciprocating leverarm and at the other end to one fork of said pivotally mounted bellcrank lever, a rocker arm attached to the other fork of said bell cranklever and pneumatic control means for allowing said rocker arm, bellcrank lever, rod and reciprocating lever arm to move through apredetermined angle and increase the angular rotation of the rotatableshaft relative to the angularly reciprocating traverse shaft, wherebythe length of the downward traverse stroke of the reciprocating leverarm and the ring rail is increased beyond the normal traverse strokethereof; so as to cause the winding of a relatively small amount of yarnon the yarn support at a point spaced from the main body of yarn,saidsmall amount of yarn being available for use as a transfer tail.

8. In a spinning device for producing yarn packages having a transfertall, the combination with means including a ring rail having at leastone spinning ring and traveller mounted thereon for winding yarn on a,rotating yarn support, of an angularly reciprocating traverse shaftoperatively connected to a rotatable shaft so as to reciprocate saidshaftuniformly therewith, a lever arm keyed to said rotatable shaft andreciprocating therewith, a vertical rod depending fromsaid ring rail andresting on said reciprocating arm for traversing the ring rail, andpneumatically operated traverse control release means including a bellcrank lever pivotally mounted on the angularly reciprocating traverseshaft, a rod connected at one end to said reciprocating lever arm and atthe other end to one fork of said pivotally mounted bell crank lever, arocker arm attached to the other fork of said bell crank lever, an aircylinder, a-

9. In a spinning device for producing yarn packages having a transfertall, the combination with means including a ring rail having at leastone spinning ring and traveller mounted thereon for winding yarn on arotating yarn support, of an angularly reciprocating traverse shaftoperatively connected to a rotatable shaft so as to reciprocate saidshaft uniformly therewith, a lever arm ,keyed to said rotatable shaftand reciprocating therewith, a vertical rod depending from said ringrail andrestingpn said reciprocating arm for traversing the ring rail,and pneumatically operated traverse control release means including abell crank lever pivotally mounted on the angularly reciprocatingtraverse shaft, a rod connected at one end to said reciprocating leverarm and at the other end to one fork of said pivotally mounted bellcrank lever, a rocker arm attached to the other fork of said bell cranklever, adjustable stop means defining the limit of the pivotal movementof said bell crank lever and rocker arm, an air cylinder, a piston insaid cylinder maintained in fixed position by air under pressure, and apiston rod attached to said piston and to said rocker arm, the releaseof the air under pressure allowing said rocker arm, bell crank lever,rod and reciprocating lever arm to move through a predetermined angleand increase the angular rotation of the rotatable shaft relative to theangularly reciprocating traverse shaft, whereby the lengthof thedownward traverse stroke of the reciprocating lever arm and the ringrail is increased beyond the normal traverse stroke thereof, so as tocause the winding creased beyond the normal traverse stroke thereof, soas to cause the winding of a relatively small amount of yarn on the yarnsupport at a .point spaced from the main body of yarn, said small amountof yarn being available for use as a transfer tail.

of a relatively small amount of yarn on the yarn support at a pointspaced from the main body of yarn, said small amount of yarn beingavailable for use as a transfer tail.

WILLIAM J. ELVIN. ELMER R. STAI-LL.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITEIE) STATES PATENTS

